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Re: [PSUBS-MAILIST] Hemisphere Seat Formula



Sean,
That made the news down here in NewZealand.
The game wasn't even close, what have they got
to complain about.
Alan

----- Original Message ----- From: "Sean T. Stevenson" <cast55@telus.net>
To: <personal_submersibles@psubs.org>
Sent: Friday, June 17, 2011 3:17 AM
Subject: Re: [PSUBS-MAILIST] Hemisphere Seat Formula


Jon - I didn't get a chance to go over your email last night. A bunch of hooligans decided to destroy my city in a riot, and I had some difficulty getting out. I'll take a look at it on Friday.

-Sean


On 15/06/2011 6:54 AM, Jon Wallace wrote:

Greg,

I note that the K250 dome only has a 1/2inch seat welded to the conning tower. I assume this is because the bulk of the force is transferred to the conning tower cylinder based on the manner of the configuration. Mounting a similar dome in a tank head would require a different and bulkier mount, if not only due to reinforcement requirements.

Jon


On 6/15/2011 9:30 AM, Greg Cottrell wrote:
Jon,

The dome shape that exerts the highest radial loading should fall somewhere
around the midpoint between a flat disc and a full hemisphere. I imagine
that the 90 degree segment exerts the peak load but I don't know how to
demonstrate that mathematically.



Greg Cottrell
Project Manager




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